Maybe you know the problem - Early Watch Alerts are created in Solution Manager and tables DSVASRESULTSGEN and DSVASRESULTSATTR get bigger and bigger. You can send the EWAs as email, but still the data remains in the database.
So after the email setup (hint: running report RDSMOP_MAIN can save a lot of time*), best thing to do is to configure a periodically job with RDSMOPREDUCEDATA as step (see https://service.sap.com/sap/support/notes/546685). E. g. you can delete all sessions of specific SIDs and leave sessions not older than 90 days.
Selection of multiple SIDs
Set retention
If you're running on Oracle on Linux / UNIX, you can use this cronjob to reorganize the tables:
0 1 4 1,3,5,7,9,11 * su - ora<SID> -s /bin/sh -c "brspace -c force -f tbreorg -a reorg -t DSVASRESULTSGEN"
0 1 5 1,3,5,7,9,11 * su - ora<SID> -s /bin/sh -c "brspace -c force -f tbreorg -a reorg -t DSVASRESULTSATTR"
* Although SAP has put a message which doesn't allow customers to use the old SOLUTION_MANAGER / DSWP transaction, you can still run the report in SE38 and use the old GUI:
